Mother Nature's house cleaner.
Mother Nature's house cleaner.
Some bug fallacies.
Some bug fallacies.
Conservation and our natural heritage.
Conservation and our natural heritage.
Our dependence on birds and insects.
Our dependence on birds and insects.
The biological control of insect pests.
The biological control of insect pests.
How birds and insects work together.
How birds and insects work together.
The teaching of nature study.
The teaching of nature study.
The pearly fresh-water mussel and the pearl button industry.
The pearly fresh-water mussel and the pearl button industry.
Methods and matter in nature study.
Methods and matter in nature study.
The ox warble flies.
The ox warble flies.
Life cycle of broad tapeworm, Diphyllobothrium latum.
Life cycle of broad tapeworm, Diphyllobothrium latum.
Fannia scaleris and Fannia canicularis.
Fannia scaleris and Fannia canicularis.
Editorial : "To the editor of the Globe."
Editorial : "To the editor of the Globe."
Notes on evolution.
Notes on evolution.
Speech notes : University of Western Ontario fundraising.
Speech notes : University of Western Ontario fundraising.
Speech notes : University of Western Ontario fundraising.
Speech notes : University of Western Ontario fundraising.
Speech notes.
Speech notes.
Speech notes.
Speech notes.
Notes on fraternities.
Notes on fraternities.
Evolution.
Evolution.
Evolution of the cosmos.
Evolution of the cosmos.
Environment of the farm : speech to Middlesex educational assembly.
Environment of the farm : speech to Middlesex educational assembly.
Bugs.
Bugs.
Conservation.
Conservation.
Parasitic infestations of fish.
Parasitic infestations of fish.
The ox warble flies : radio talk.
The ox warble flies : radio talk.
Total food and fibre production of all lands in full production.
Total food and fibre production of all lands in full production.
Conservation : the basis of human progress.
Conservation : the basis of human progress.
The late Sir Charles Saunders.
The late Sir Charles Saunders.
Garden insects and the general principles of control.
Garden insects and the general principles of control.
Timely suggestions with reference to slath-borer injury caused in London this summer.
Timely suggestions with reference to slath-borer injury caused in London this summer.
Taming the Thames : whose job is it?
Taming the Thames : whose job is it?
Another flood.
Another flood.
What must we do to use South-western Ontario resources wisely?
What must we do to use South-western Ontario resources wisely?
Flood control.
Flood control.
Those awful starlings.
Those awful starlings.
Floods again.
Floods again.
The Thames again in flood.
The Thames again in flood.
Birds and flowers.
Birds and flowers.
Helpful insects.
Helpful insects.
The care of house plants.
The care of house plants.
Entomology and the arts curriculum.
Entomology and the arts curriculum.
Insects and birds.
Insects and birds.
Reforestation and flood control.
Reforestation and flood control.
Conservation.
Conservation.
Brook trout.
Brook trout.
land-use adjustment in Southern Ontario.
land-use adjustment in Southern Ontario.
Conservation : its meaning, objectives and our national organization.
Conservation : its meaning, objectives and our national organization.
Forest cover and water conservation.
Forest cover and water conservation.
Fundamentals in conservtaion education.
Fundamentals in conservtaion education.
Utilization of the White memorial park for educational and scientific purposes.
Utilization of the White memorial park for educational and scientific purposes.
Discussion of problems related to conservation.
Discussion of problems related to conservation.
The administration of the conservation of the natural resources of the Province of Ontario.
The administration of the conservation of the natural resources of the Province of Ontario.
Planning in terms of the furure on the Ganaraska.
Planning in terms of the furure on the Ganaraska.
Notes on the myiasis of the urinary tract due to larvae of the genus Fannia (Diptera).
Notes on the myiasis of the urinary tract due to larvae of the genus Fannia (Diptera).
Christianity and science.
Christianity and science.
The aesthetic appreciation of the farm.
The aesthetic appreciation of the farm.
Twenty minutes with the amateur gardener.
Twenty minutes with the amateur gardener.
Timely hints to home gardeners.
Timely hints to home gardeners.
Rehabilitation in Canada.
Rehabilitation in Canada.
Conservation sublimated.
Conservation sublimated.
Doon Valley.
Doon Valley.
Conservation : a common need of both our countries.
Conservation : a common need of both our countries.
Sod webworms.
Sod webworms.
Conservation.
Conservation.
Soil conservation.
Soil conservation.
Parental care by robins.
Parental care by robins.
Address at the Rehabilitation Through Conservation meeting, Orrawa, march 10, 1943.
Address at the Rehabilitation Through Conservation meeting, Orrawa, march 10, 1943.
Flood control in South-western Ontario.
Flood control in South-western Ontario.
Address on the history of the Conservation Commission of Canada and continuing need for its like.
Address on the history of the Conservation Commission of Canada and continuing need for its like.
Foreward[sic] and acknowledgements.
Foreward[sic] and acknowledgements.
Conservation and development of natural resources : post-war rehabilitation.
Conservation and development of natural resources : post-war rehabilitation.
Conservation paper no. 2 : flood control / by John D. Detwiler.
Conservation paper no. 2 : flood control / by John D. Detwiler.
A reply to a toast to the faculty.
A reply to a toast to the faculty.
Parasitic infestations of fish.
Parasitic infestations of fish.
Planning for conservation and for wildlife returns.
Planning for conservation and for wildlife returns.
Biology.
Biology.
The organization of a new society having to do with conservation.
The organization of a new society having to do with conservation.
Conservation and our natural heritage.
Conservation and our natural heritage.
Conservation in Ohio.
Conservation in Ohio.
Conservation.
Conservation.
Conservation and flood control.
Conservation and flood control.
Our dependence on birds and insects.
Our dependence on birds and insects.
Soil physics.
Soil physics.
Afield with a naturalist.
Afield with a naturalist.
United Nations Scientific Conference on the Conservation and Utilization of Resources.
United Nations Scientific Conference on the Conservation and Utilization of Resources.
Importance of science in education..
Importance of science in education..
Address to the Western Ontario Educational Assembly.
Address to the Western Ontario Educational Assembly.
Wildlife conservation, U.s. and Canada.
Wildlife conservation, U.s. and Canada.
Applied biology courses and lectures.
Applied biology courses and lectures.
Applied biology 460B
Applied biology 460B
Applied biology course notes.
Applied biology course notes.
Acarina.
Acarina.
The Arthropods.
The Arthropods.
Crustacea.
Crustacea.
Applied Biology 400 : systematic synopses of acarina and crustacea.
Applied Biology 400 : systematic synopses of acarina and crustacea.
Invertebrate zoology : lecture outline.
Invertebrate zoology : lecture outline.
Applied biology 400 and 460A.
Applied biology 400 and 460A.
Applied biology 453B : fish and water.
Applied biology 453B : fish and water.
Thames River.
Thames River.
